A social science that studies how individuals, governments, firms ... An approach to economics that relates supply and demand to an ... The labor market refers to the supply and demand for labor, in ... A market where information is not quickly disclosed to all participants ... An economic theory that outlines how a steady economic growth ... A branch of microeconomics that explores how businesses and institutions ...
Tannis root, with its mystic/magic property and bad smell, is simply a clever plot device used by author Ira Levin to demonstrate the power of the devil worshipers.
There are no specifically mentioned uses for horseradish that I can find other than the ability to clear sinuses in a single breath! Horseradish has a long, white tap root that is what is used most often in the making of sauces, but, the fresh young leaves can be harvested to put in salads or steamed.